the application of Difluoromethane R-32

http://www.fluoride-fluorid.com/products/Refrigerant/Difluoromethane-R-32/Difluoromethane, aswell alleged HFC-32 or Difluoromethane R-32, is an amoebic admixture of the dihalogenoalkane variety. It is based on methane, except that two of the four hydrogen atoms accept been replaced by fluorine atoms. Hence the blueprint is CH2F2 instead of CH4 for accustomed methane.

Uses

Difluoromethane R-32 is a refrigerant that has aught blast burning potential. Difluoromethane in a zeotropic (50%/50%) w/w admixture with pentafluoroethane (R-125) is accepted as R-410A, a accepted backup for assorted chlorofluorocarbons (aka Freon) in new refrigerant systems, abnormally for air-conditioning. The zeotropic mix of Difluoromethane with pentafluoroethane (R-125) and tetrafluoroethane (R-134a) is accepted as R-407A through R-407E depending on the composition. Likewise the azeotropic (48.2%/51.8% w/w) admixture with chlorotrifluoromethane (R13). As a refrigerant difluoromethane is classified as A2L - hardly combustible [2009 ASHRAE Handbook]. Although it has aught blast burning potential, it has all-around abating abeyant 675 times that of carbon dioxide, based on a 100-year time anatomy [May 2010 TEAP XXI/9 Task Force Report].

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from: fluorides

the specification of 2-Chloro-6-picoline

Chemical Name: 2-Chloro-6-picoline

Synonyms: 6-Chloropicoline;6-CHLORO-2-PICOLINE;2-CHLORO-6-PICOLINE;2-Picoline, 6-chloro-;6-CHLORO-ALPHA-PICOLINE;6-Chloro-2-picoline,98%;2-CHLORO-6-METHYLPYRIDINE;6-CHLORO-2-METHYLPYRIDINE;2-Chioro-6-Methylpyridine;6-Methyl-2-chloropyridine

CBNumber: CB1111440

Molecular Formula: C6H6ClN

Formula Weight: 127.57

MOL File: 18368-63-3.mol

2-Chloro-6-picoline Property

bp : 64-68 °C10 mm Hg(lit.)

density : 1.167 g/mL at 25 °C(lit.)

refractive basis : n20/D 1.527(lit.)

Fp : 165 °F

BRN : 107187

CAS DataBase Reference: 18368-63-3(CAS DataBase Reference)

NIST Chemistry Reference: 2-Cl-6-(CH3)-pyridine(18368-63-3)

EPA Substance Registry System: Pyridine, 2-chloro-6-methyl-(18368-63-3)

Safety

Hazard Codes : Xi,Xn

Risk Statements : 36/37/38-20/21/22

Safety Statements : 26-36-36/37/39

RIDADR : UN2810

WGK Germany : 3

Hazard Note : Irritant

HazardClass : 6.1

PackingGroup : III

2-Chloro-6-picoline Chemical Properties

Chemical Properties

Light chicken liquid

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from: Fluorides 

what is KHF2

KHF2 (potassium hydrogen fluoride)
Known as the two potassium hydrogen fluoride; acid potassium fluoride; hydrogen fluoride and potassium
The physical properties of colorless tetragonal (α) or cubic (β)crystallization.
The slightly sour smell. Double-crystal compounds.
Α-type below 195 ℃, 195 ~ 239 ° C for the β-type.
The relative density of 2.37. The melting point of about 225 ° C (decomposition).
Soluble in water, soluble in potassium acetate, insoluble in ethanol.The acidic aqueous solution.
In dry air, regardless of the liberation of hydrogen fluoride, in themoist air to absorb water and release hydrogen fluoride.
Heated to 310 ° C, the escape of hydrogen fluoride, hydrogen fluoride to 400 ° C vapor pressure up to 0.101325MPa (1atm).
Activity of the molten potassium hydrogen fluoride is potassium fluoride.
Toxic. Corrosive.
KHF2 is  used in the manufacture of anhydrous hydrogen fluoride,potassium fluoride pure optical glass element fluorine is also used as the etchant of glass, welding flux, wood preservatives, etc.
Toxic toxic protection, the maximum allowable concentration2.5mg/m3.
Corrosive to the skin, mucous membrane irritation. Thermal decomposition will generate hydrogen fluoride. Operation must wear protective equipment, avoid contact with the skin, others seehydrogen fluoride.
Packing and storage: iron drum lined with two layers of polyethyleneplastic bags, barrel, net weight 45kg. The packaging should be clearly marked "drugs" sign.
Inorganic drugs, the IMDG Code: 83020.
KHF2 should be stored in a cool, ventilated, dry coffers. The packagingmust be complete. Storage should take strict precautions againstmoisture. Non-food items during storage or shipment.
During transport to prevent the rain and sun.

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from: Fluorides

what is Nitrogen Trifluoride

Nitrogen trifluoride is the asleep admixture with the blueprint NF3. This nitrogen-fluorine admixture is a colorless, toxic, odourless, nonflammable gas. It finds accretion use as an etchant in microelectronics.

Nitrogen trifluoride is acclimated in the claret carving of silicon wafers. Today nitrogen trifluoride is predominantly alive in the charwoman of the PECVD accommodation in the top aggregate assembly of aqueous clear displays and silicon-based attenuate blur solar cells. In these applications NF3 is initially torn down in situ, by a plasma. The consistent fluorine atoms are the alive charwoman agents that advance the polysilicon, silicon nitride and silicon oxide. Nitrogen trifluoride can be acclimated as able-bodied with tungsten silicide, and tungsten produced by CVD. NF3 has been advised as an environmentally bigger acting for sulfur hexafluoride or perfluorocarbons such as hexafluoroethane. The action appliance of the chemicals activated in claret processes is about beneath 20 %. Therefore some of the PFCs and aswell of the NF3 consistently escape into the atmosphere. Modern gas abatement systems can abatement such emissions.

Elemental fluorine has been alien as an environmentally affable backup for nitrogen trifluoride in the accomplish of collapsed console displays and attenuate blur solar cells.

Nitrogen trifluoride is aswell acclimated in hydrogen fluoride and deuterium fluoride lasers, which are types of actinic lasers. It is adopted to fluorine gas due to its acceptable administration properties, absorption its ample stability.

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from: Fluorides